Scribblebot

This morning, Alistair and I went to the green to check out a flea market.  The flea market wasn't very exciting, but the Montshire had a tent with activities for kids.  Alistair made a scribblebot.  He made a little circuit with a motor and then attached it to a frame that he made.  The motor, with an offset weight, made the whole frame move, making scribble art.